//

// Helper module for manipulating DOM elements.

//

app.dom = (function() {

var $ = Sizzle;

// Returns true if class is found

function hasClass(el, clsName) {

var regex = new RegExp("(^|\\s)" + clsName + "(\\s|$)");

return regex.test(el.className);

}

// Adds class to CSS element

function addClass(el, clsName) {

if (!hasClass(el, clsName)) {

el.className += " " + clsName;

}

}

// Removes CSS class from element

function removeClass(el, clsName) {

var regex = new RegExp("(^|\\s)" + clsName + "(\\s|$)");

el.className = el.className.replace(regex, " ");

}

// finds element based on selector and attaches handler to event

function bind(el, event, handler) {

// If type is string use selector to find element otherwise

// assume DOM element is being passed.

if (typeof el == "string") {

el = $(el)[0];

}

el.addEventListener(event, handler, false);

}

return {

$ : $,

hasClass : hasClass,

addClass : addClass,

removeClass : removeClass,

bind : bind

};

})();